randomConfiguration

Generate random configuration of robot

Syntax

configuration = randomConfiguration(robot)

Description

configuration = randomConfiguration(robot) returns a random configuration of the specified robot. Each joint position in this configuration respects the joint limits set by the PositionLimits property of the corresponding rigidBodyJoint object in the robot model.

Examples

Visualize Robot Configurations

Show different configurations of a robot created using a RigidBodyTree model. Use the homeConfiguration or randomConfiguration functions to generate the structure that defines all the joint positions.

Load example robots as RigidBodyTree objects.

load exampleRobots.mat

Create a structure for the home configuration of a Puma robot. The structure has joint names and positions for each body on the robot model.

config = homeConfiguration(puma1)

config=1×6 struct array with fields:
    JointName
    JointPosition

Show the home configuration using show. You do not need to specify a configuration input.

show(puma1);

Modify the configuration and set the second joint position to pi/2. Show the resulting change in the robot configuration.

config(2).JointPosition = pi/2;
show(puma1,config);

Create random configurations and show them.

show(puma1,randomConfiguration(puma1));

Input Arguments

robot — Robot model

rigidBodyTree object

Robot model, specified as a rigidBodyTree object.

Output Arguments

configuration — Robot configuration

vector | structure

Robot configuration, returned as a vector of joint positions or a structure with joint names and positions for all the bodies in the robot model. You can generate a configuration using homeConfiguration(robot), randomConfiguration(robot), or by specifying your own joint positions in a structure. To use the vector form of configuration, set the DataFormat property for the robot to either 'row' or 'column' .

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

Usage notes and limitations:

When creating the rigidBodyTree object, use the syntax that specifies the MaxNumBodies as an upper bound for adding bodies to the robot model. You must also specify the DataFormat property as a name-value pair. For example:

robot = rigidBodyTree("MaxNumBodies",15,"DataFormat","row")

To minimize data usage, limit the upper bound to a number close to the expected number of bodies in the model. All data formats are supported for code generation. To use the dynamics functions, the data format must be set to "row" or "column".

The show and showdetails functions do not support code generation.

Version History

Introduced in R2016b